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  • Title: Urine electrolyte response to 18-hydroxy-11-deoxycorticosterone in normal man.
    Author: Nicholls MG, Fraser R, Hay G, Mason P, Torsney B.
    Journal: Clin Sci Mol Med; 1977 Nov; 53(5):493-8. PubMed ID: 22421.
    Abstract:
    1. To assess whether the adrenal corticosteroid 18-hydroxy-11-deoxycorticosterone [18-(OH)-DOC] affects urine electrolyte excretion in normal man, seven male volunteers received 120 microgram (353 nmol) intravenously in 1 h. This was compared with glucose (50 g/l; control) and aldosterone (80 microgram, 222 nmol) infusions in the same subjects. 2. A definite though weak antinatriuretic response to 18-(OH)DOC was observed, whereas urine potassium excretion was not altered. Aldosterone increased urine potassium excretion and reduced sodium output. Urine pH was lowered by both corticosteroids, aldosterone in general having a more marked effect. Urine volume was not altered by 18-(OH)DOC. 3. Plasma concentrations of 18-(OH)DOC and aldosterone rose approximately tenfold during their respective infusions. Compared with that of aldosterone, the metabolic clearance rate of 18-(OH)DOC was slower andits plasma half-life was longer. 4. We have been able to demonstrate that 18-(OH)DOC has a definite, albeit weak antinatriuretic action in normal man, but whether or not this corticosteroid is capable of elevating the blood pressure in man remains to be shown.
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